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cannot convert from 'object' to system.array

I defined a session variable as an array using Session["MY_SESVAR"] = new
string[200];
Later, in my code, I need to set it and sort it.
I tried Session["MY_SESVAR"][j] = "some string";
My error is "Cannot apply indexing with [] to an expression of type 'object'.
Then, later, I try to use it, and sort on it an get 'cannot convert from
'object' to System.array.
what am I doing wrong here?
Nov 19 '05 #1
3 4185
You need to put the session variable to a string array, put your "some
string" to that string array, and put it back to the "MY_SESVR".
Egghead
"klynn" <kl***@discussi ons.microsoft.c om> wrote in message
news:22******** *************** ***********@mic rosoft.com...
I defined a session variable as an array using Session["MY_SESVAR"] = new
string[200];
Later, in my code, I need to set it and sort it.
I tried Session["MY_SESVAR"][j] = "some string";
My error is "Cannot apply indexing with [] to an expression of type 'object'. Then, later, I try to use it, and sort on it an get 'cannot convert from
'object' to System.array.
what am I doing wrong here?

Nov 19 '05 #2
the session collection only holds objects, to use an object as an array you
need to cast it:

((string[]) Session["MY_SESVAR"])[j] = "some string";

though this will still blow if there is no session, you should try something
like:

string[] myStrings = Session["MY_SESVAR"] as string[];
if (myStrings == null)
setupSession();
else
myStrings[j] = "some string";

-- bruce (sqlwork.com)
"klynn" <kl***@discussi ons.microsoft.c om> wrote in message
news:22******** *************** ***********@mic rosoft.com...
I defined a session variable as an array using Session["MY_SESVAR"] = new
string[200];
Later, in my code, I need to set it and sort it.
I tried Session["MY_SESVAR"][j] = "some string";
My error is "Cannot apply indexing with [] to an expression of type
'object'.
Then, later, I try to use it, and sort on it an get 'cannot convert from
'object' to System.array.
what am I doing wrong here?

Nov 19 '05 #3
So, what you're saying is as follows:
First setup string array
string strArr[] = new string[200];
then, set it.
then, sort it.
then, take session variable and set it to strArr
Session["MY_VAR"] = strArr
??

"Egghead" wrote:
You need to put the session variable to a string array, put your "some
string" to that string array, and put it back to the "MY_SESVR".
Egghead
"klynn" <kl***@discussi ons.microsoft.c om> wrote in message
news:22******** *************** ***********@mic rosoft.com...
I defined a session variable as an array using Session["MY_SESVAR"] = new
string[200];
Later, in my code, I need to set it and sort it.
I tried Session["MY_SESVAR"][j] = "some string";
My error is "Cannot apply indexing with [] to an expression of type

'object'.
Then, later, I try to use it, and sort on it an get 'cannot convert from
'object' to System.array.
what am I doing wrong here?


Nov 19 '05 #4

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